एपीए उद्धरण

Kunz, R. M. (1971). The challenge of life. Switzerland: Basel and Stutgart.

शिकागो स्टाइल उद्धरण

Kunz, Robert M. The Challenge of Life. Switzerland: Basel and Stutgart, 1971.

एमएलए उद्धरण

Kunz, Robert M. The Challenge of Life. Switzerland: Basel and Stutgart, 1971.